Aiwa CX-JDS20 - User Manual

SERVICE MANUAL
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
AEP Model
CX-JDS20
E Model
CX-JDS20/JDS50
Australian Model
CX-JDS20
Russian Model
CX-JDS20/JDS50
COMPACT DISC DECK RECEIVER
9-879-515-01
2005C1678-1
© 2005.03
Ver. 1.0 2005.03
SPECIFICATIONS
CX-JDS20/JDS50
CX-JDS20/JDS50 are the Amplifier, CD player, Tape
Deck and Tuner section in DBX-DS20/DBX-DS50.
— Continued on next page —
Model Name Using Similar Mechanism NEW
CD
CD Mechanism Type BU-F1BD81A
Section
Optical Pick-up Name KSM-215DCP/C2NP
TAPE
Model Name Using Similar Mechanism CX-LEM330
Section Tape Transport Mechanism Type
JDS20 CMAL5Z220A
JDS50 CMAL1Z240A
Photo : CX-JDS50
Other models:
JDS50
The following measured at AC 120, 127, 220, 240 V
50/60 Hz
DIN power output (rated): 160 + 160 watts (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
200 + 200 watts (6 ohms at
1kHz, 10% THD)
JDS20
The following measured at AC 120, 127, 220, 240 V
50/60 Hz
DIN power output (rated): 96 + 96 watts (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
120 + 120 watts (6 ohms at
1kHz, 10% THD)
Inputs
AUDIO IN (stereo mini jack):
voltage :
impedance 47 kilohms
MIC (phone jack) (except for European model):
se
JDS20: 0.25 mV
JDS50: 0.1 mV,
nsitivity:
impedance 10 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8ohms or more
SPEAKER: accepts impedance of 6 to
16 ohms
Amplifier section
European model:
JDS20
DIN power output (rated): 96 + 96 watts (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
120 + 120 watts (6 ohms at
1kHz, 10% THD)
Music power output (reference):
180 + 180 watts (6 ohms at
1kHz, 10% THD)
Russian model:
JDS50
DIN power output (rated): 160 + 160 watts (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
200 + 200 watts (6 ohms at
1kHz, 10% THD)
Music power output (reference):
330 + 330 watts (6 ohms at
1kHz, 10% THD)
JDS20
DIN power output (rated): 96 + 96 watts (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
120 + 120 watts (6 ohms at
1kHz, 10% THD)
Music power output (reference):
180 + 180 watts (6 ohms at
1kHz, 10% THD)
JDS20: 1.85 V
JDS50: 0.9 V,

Summary

Specifications

Amplifier Section Specifications

Power output and impedance for different models.

CD, Tape, and Tuner Specs

SECTION 2 DISASSEMBLY

Disassembly Flow

SECTION 4 MECHANICAL ADJUSTMENTS

Tape Mechanism Adjustments

Covers cleaning, demagnetizing, torque measurements for tape deck.

Head Alignment and Speed Checks

Details head azimuth, bias, and tape speed adjustments.

SECTION 5 ELECTRICAL ADJUSTMENTS

CD Player Signal Checks

Covers S-curve, RFDC, and RFAC level checks for CD playback.

E-F Balance Adjustment

SECTION 6 DIAGRAMS

Block Diagrams

Printed Wiring Board Layouts

Shows component layouts for various boards (BD, Main, Panel, AMP, Power).

Schematic Diagrams

Provides circuit diagrams for major sections (BD, Main, Panel, AMP, Power).

IC Pinout and Function Descriptions

SECTION 8 ELECTRICAL PARTS LIST

Component Part Lists

Lists capacitors, resistors, semiconductors, and other parts.

Aiwa CX-JDS20 Specifications

General

Type	Stereo System
Brand	Aiwa
Model	CX-JDS20
Power Output	20W per channel
Tuner	AM/FM
CD Player	Yes
Cassette Deck	Yes